Shining Elf

Level 2 WIND/Spellcaster Xyz Effect
1600 ATK / 1000 DEF

2 Level 2 monsters
When your opponent Normal or Special Summons a monster(s) (except during the Damage Step): You can detach 1 Xyz Material from this card; that monster(s) loses 500 ATK.

Rulings – Yugipedia

Printings:

Galactic Overlord: GAOV-EN098 (Super Rare) - 2012-05-08
Super Starter Power-Up Pack: YS13-ENV10 (Common) - 2013-06-14

Prices:

Cardmarket: 0.16 €
TCGplayer: $ 0.39